131121313104402 has 96 divisors (see below), whose sum is σ = 301513817966400. Its totient is φ = 41039648262144.

The previous prime is 131121313104371. The next prime is 131121313104407. The reversal of 131121313104402 is 204401313121131.

131121313104402 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 213 + 1 + 3 + 1 + 0 + 440 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (131121313104407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227881873 + ... + 228456539.

It is an arithmetic number, because the mean of its divisors is an integer number (3140768937150).

Almost surely, 2^{131121313104402} is an apocalyptic number.

131121313104402 is an abundant number, since it is smaller than the sum of its proper divisors (170392504861998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131121313104402 is a wasteful number, since it uses less digits than its factorization.

131121313104402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576440 (or 576437 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 131121313104402 its reverse (204401313121131), we get a palindrome (335522626225533).

The spelling of 131121313104402 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred thirteen million, one hundred four thousand, four hundred two".